Means for supplying air to coke-ovens.



J. H. HILLMAN. MEANS FOR SUPFLYING AIR T0 GOKE OVENS.

APPLICATION FILED 0013.6, 1908.

Patentedjune 8, 1909.

OOOOIOOOO i ',being had therein to' the, accompanying HNE SATS@ anni? @anion v r3 awa mam; f

Pittsburg, in the ,county of Alleghenyfan'df State iof "Pennsylvania, have invented certain' new` Sanduseful Improvements in' Means for', *Supplying to' (Joke-Ovens, of which the following' is specification, reerence' drawings.

My1 inventon relates to themanuilaenire. of eolfrle, f andV consists of, means, vfor furnisulgifv ling-a"supply 'of air, 'eitiier 1at-the normalat-` nosplieri'c temperature, or'lpreviously heated,

to the' 'interior of the oven or ovens; during' ythe ovensfthe burning .of the coke; continuing untilthe volatile ingredients are burned oii',`faftr which the supply of air is eut oii found in practice .-that owing. to lv,ariatlonsl lin the f'tefniperature, fthe amount ofi `moisture carried in `suspension in the atmosphere, the' veryingfvind,'eurrents'or abseneeor pres-r.

ence of vrind,` with. .other 'allQSPlierie ,conn dit-ions, result"jiiij aygreat varia'tbnv of' .the ook-ed product neto the varying :supplyf'of arand th stanti varying-degree ofits oonditioii; j The: object* ofjniy `1nlve1ition=is, these eonditionsby supplying a eurrextfof -1 'ain'ieitlier atlnornial temperatureforpref' varyingdgreesof'volume, to eachonp viously heated, preferablyy under pressurein ,0 .3f series of ovens, thereby controlling this con' ditions ,offy combustion suiting the-supply" and qualityfof'air to the particular kind 'of coa being coked, and subjecting iftabso-vk lute yto the control'of the operatorl f 4A further and valuable featurefof" the iii'- I` yention is, that by furnishing a fixed amount of air to the ovens, the duration of thecolring process is greatly shortened', thereby lowering the cost of manuacture,' and reducing the ash to a minimum,

In carrying out myinve'ntion, when using pre-heated air, I employ the heat 'o ffthe'y .waste gases ofthe ovens for pre-'heating the v air, the invention being adapted to any type.

...,JQnNlgIfi, -HILLMAM on PITTSBURGL PENN i Serial No. 456,457?, 4

i oi, oven ln rhereinthe `products of combustion, i

instead of escaping freely to the atmosphere,

areteeoductedto aconnnonlstaek or other roerige, and 'distributing element.

oation":-1 -Figure l is a planyiewtpartlylin section, of a banlrof ovens provided withv lnrthedrawings accompanying theiapplithe air heatingvand. distributing a'pparatnsV l-. Vfor carrying out my invention; Fig. 2

view, in side elevation partly .in vertical f se nos, on the 1in@ 1i. ii.

of rig. i. rig; sis

an enlargedeross sectional view. onthe line lil-[IIL of Fig: fFigj. 4 an enlarged de` tail sectional viewthrough one of the ovens,y

:showing the valve-'controlled `air-distributingpipes F ig. 5 is a detailfview showing a modified construction of air supply' con neetions.

l 'In the drawings, 2 represent the oven l cavities, which 1n the' formfshown, vextend transversely-freni oneside to the iztherrw1n- ,tunnel "ornnbeingl arranged in a bank and" provided with' 'the usual v'central charging transversely Aai?" ngedfcirculatingpipes 6' extending fies, ,as showin, across the area of the space traversed -by the Awaste gases.

Pipes are'connected-,.at'each end with a' fseiaesoff headersf', 7,53 any suitable forni, Y :and aregse arranged as toeonstitute a series oflfayersof pipeswiiereoy, 'when' airis 1n trodueed into the lower' ,layer of sucliseries, .i

it will' traverse 'therethrough tothe' nextadjacentheader-rand from said'header backg yivardly across -tlie same-.area above the said 1jr-yer;^ to .the header yorrthe `other side,\then reversing its course andso on until the final' mplayer deiiversits'air-into thelasthealei-l TBA-v this yconstruction and arrangement, it will beseenthat when air is forced through the series of numerous pipes arranged across t 10a thepath of the products of combustion. it

will finally emefg? in wjthe upper headers in a highly heat/ed condition.'y @In the place" .of lthe headers shown ordinary elbow,f"U orl `tee,.ffnnections"may be used tojoinfthe ends ofthe pipes, asfin ordinary pipe .tt g `.For the 'purpose of supplying pipes, 'anyntable meansniay b 20 is preferably provided with a controllin 40 S as indicated in Fig.

5 trunk pipes 9 are connected with each upper header at opposite sides, carried along through the brick work of the structure at each side, preferably above the door openings, as shown` and provided with downwardly extending air supply pipes l0. Said pipes 10 may be of anynumber desired and may be connected through the walls-of the oven at any desired point, as indicated in Figs. 2 and 4, so as to furnish the air as desired. 'lhey may also be arranged outside of the Walls and covered with any suitable non-conducting materiahas asbestos. For the purpose of accurately controlling the supply of air through said pipes, each branch pipe o. valve or cock ll havinga handle or key exhtending outwardly beyond the front of the ovens, or adapted to be loperated by a socket wrench, so that the supply of air to each z5 oven may be accurately controlled and regulated by theoperator in charge, from time to time as the coking process advances. Likewise, the initial pressure of the air, or its volume may be controlled by regulating the speed or supply opening of the blower.

lt wil-l thus'l be seen that the air supply is capable of being raised to any desired temperature 'to suit "the constantly varying weather andy atmospheric cor ditions. i

- If desired, the pre-heating coils may be cut out and air of the normal atmospheric temperature supplied directly to the distributing pipes 9', corresponding to pipes 9 and leading to the oven chambers, by blower 5, suitable cut-out valves or cocks` being provided so that either cold or hot air may be supplied as desired according to conditions.

The advantages of my invention will be readily appreciated by all those familiar 'with the manufacture of coke. It may be employed with good results with a bank of bcehive ovens having a suitable bustle .pipe leading from the charging holes to a st-ack, with similar{pre-heating and circulating pipes or conductors, which latter? may, if preferable, be in the f form of` checker work, as in the ordina-ry regenerative furnace, with a suitable reversing valve, when desirable to furnish heated air, or with the blower and' pipe connections for air at normal temperature.

The use of the process results in a better quality of coke, renders the burning operation much more regular and exact, reduces the ash to a minimum by reason of avoiding unnecessary combustion, and will be found to generally improve the quality of the coke, lessening the amount of labor and time required in its immufacture, while guaranteeinguniformity in the product. which is not possible where the air supply is constantlv subject to natural changes and ignorance and carelessness of the,operator.

Having described luy-invention, what l claim is :L I

l. The combination with a series of tu.. nel ovens each having outlet fines at its inid dle. portion and a common iue leading therefrom to a common outlet stack, of a series ol'L connected circulating conductors arranged across the outlet passage of the waste gases, means for supplying atmospheric air under pressure to said conductors, and conduits leading therefrom through the front wallsl of the ovens and having branch conduits opening through the side walls of the ovens at their front ends adapted to furnish heated aill for circulation toward the middle of eacli oven, substantially as set forth.

2. The combination with a series of tunnel ovens each having outlet lines at its middle portion and a common flue leading' therefrom to a common outlet' stack, of aI ries of connected circulating conductors ar ranged across the outlet passage of the waste gases, means for supplying atmospheric air under pressure to said conductors, and conduits leading therefrom tlnfoug'h the front walls of the ovens having branch conduits opening through the side walls of thc ovens at their front ends adapted to furnish heated air .for circulation toward the middle of each oven, and having means for controlling the volume of air therethrough, sulstantially as set forth.-

In testimony whereof I affix my signature in presence of two witnesses.

JOHN l-l'. lllLLMN.

lVitnesses C. M. CLARKE,

CIIAS. S. Lnrnnr. 

